Find out about peritoneal dialysis, what life is like while on it and the prognosis for those suffering from this condition. Learn how long a patient can be on peritoneal dialysis while awaiting kidney transplant.
Erasers are made from either natural or synthetic rubber. Natural rubber is produced from latex that is collected from rubber trees. Water is removed from the latex, increasing the rubber content to 60%. Acid is added to the liquid concentrate in order to produce solid sheets of dry rubber.
1. Most pencils are made of cedar wood. Cedar can be found by the Great. Lakes. 2. Pencil lead is made from a form of carbon called graphite. Graphite cannot be found easily in the U.S. It is mainly imported from Sri Lanka or parts of Canada. 3. This graphite is then mixed with wax and clay. This wax is found mainly in Mexico, while the clay is found in the Southern parts of the U.S. 4. Ferrule, which holds the eraser to the wood, is made up of zinc and